That's just your assumption. SpaceX is actually doing all that. They invested early in good simulation tools and they are developing their own. They have great

That's just your assumption. SpaceX is actually doing all that. They invested early in good simulation tools and they are developing their own. They have great material science teams and engineering teams. They do invest a lot in actually understanding the fundamentals and they make good use of the data from things that failed. Take for example the work on the failure of Amos 6. They went really deep into that one and its a pretty interesting result from a scientific perspective. On the other hand, there is no point in doing endless science on why the pad blew up during the first orbital flight test. They solution was already in development anyway and its pretty clear that the solution would migrate the problem. It might introduce new problems but the old one wasn't happening again. So there is a limited need to the exact detail of underground steam explosion or whatever exactly happened there.